Financing the AI buildout projects that AI investment in data center buildings, power systems, networking infrastructure, and specialized chips and other equipment will total an enormous $10.3 trillion from 2025 to 2032, or an average of 3.63 percent of U.S. gross domestic product per year, according to Stijn Van Nieuwerburgh, Columbia University professor and author of Financing the AI Buildout, a study published by Brookings.
“The projected buildout would be larger relative to the economy than the major U.S. canal, railroad, electrification, highway, and telecommunications investment booms,” says Van Nieuwerburgh.

source: Brookings, Financing the AI Buildout
And, as many note, opacity is growing as hyperscalers increasingly shift debt financing from their own balance sheets to third parties.
Morgan Stanley estimates that more than half of the roughly $2.9 trillion required to meet hyperscalers’
Incremental compute needs over 2025–2028 will come from outside capital, the study says.
Hyperscalers often direct a large share of their internal capital toward IT equipment, while data center shells, power infrastructure, and related real estate are financed through project-level debt, leases, and other asset-backed structures, the study says.
The upshot is that leverage is removed from hyperscaler balance sheets and shifted elsewhere. The central issue is not simply that AI infrastructure is exposed to technological and operating risks, but that the sector’s financing structure can transmit and amplify those risks, the study rightly notes.
The severity of any adverse shock will therefore depend not only on the underlying economics of AI demand, but also on where leverage resides and how losses are allocated across tenants, asset owners, and creditors, the author says.
“The relevant question is therefore not whether AI infrastructure is already systemically risky, but under what conditions project-level losses could become correlated and propagate across firms and financial institutions,” Van Nieuwerburgh argues.
All that noted, looking at Price/Earnings-to-Growth (PEG) ratios might suggest that some parts of the AI value chain might be considered undervalued, relative to their growth rates. Alphabet, Amazon and Nvidia provide cases in point.
A PEG ratio of 1.0 implies that a particular equity is valued at market averages. Conversely, PEG ratios above 1.0 imply high valuation relative to the overall market. PEG ratios below 1.0 suggest a particular firm is undervalued, relative to its growth rate and valuations of all other public firms in the market.

AI value-chain layer | Representative company | PEG | P/E | Recent EPS growth used | Interpretation |
AI accelerators | NVIDIA | 0.23 | 28.5x | 125% | Very low PEG because extraordinary earnings growth is currently outrunning the P/E |
AI accelerators | AMD | 1.26 | 157.6x | 125% | Much more expensive relative to current growth than Nvidia |
AI semiconductors / ASICs | Broadcom | ~0.46 | 46.1x | 99.8% | High P/E but enormous AI-related EPS growth |
AI infrastructure / cloud | Oracle | 0.49 | 23.1x | 47.7% | AI-cloud growth has materially improved the growth/valuation relationship |
Semiconductor equipment | Lam Research | 1.39 | 53.4x | 38.5% | AI-driven equipment growth is strong, but valuation has risen faster |
Semiconductor equipment | Applied Materials | ~1.1 | — | — | Roughly around the 1x PEG neighborhood |
AI networking | Arista Networks | 2.44 | 64.1x | 23.2% forward | Significant valuation premium relative to earnings growth |
Hyperscaler / AI platform | Alphabet | 0.15 | — | Very high TTM growth | Extremely low trailing PEG, partly reflecting unusual earnings-growth base effects |
Hyperscaler / AI platform | Amazon | 0.23 | — | — | Low trailing PEG |
Hyperscaler / AI platform | Microsoft | 0.87 | — | — | Near 1x |
Hyperscaler / AI platform | Meta | N/M / negative | — | EPS comparison distorted | Large AI capex but PEG becomes unhelpful because of earnings-base effects |
AI software / applications | Salesforce | 1.07 | 21.7x | — | Approximately market-like growth-adjusted valuation |
AI software | ServiceNow | 2.52 | 87.9x | — | Substantial growth premium |
AI software / data | Palantir | 2.62 | 163.9x | — | Very large valuation premium despite rapid growth |
AI ecosystem | Representative AI infrastructure basket | — | ~27x | — | T. Rowe Price found AI infrastructure valuations around 27x forward earnings in April 2026 |
Broad market | S&P 500 | ~1.09* | 19.5x | 17.8% | Approximate market PEG |
Nasdaq-100 | Index | — | 21.4x | — | Higher P/E than S&P 500 |
Semiconductors | Index | — | 20.2x | — | Surprisingly modest aggregate P/E despite AI exposure |